On Mon, Jan 16, 2023 at 6:05 PM Xiangyu Chen
wrote:
>
> From: Xiangyu Chen
>
> On master oe, build a qemuppc64 with systemd as default init, when we
> use nfs bootup, the kernel might panic due to missing symbol in dynamic
> libraries as below:
>
> hid-generic 0003:0627:0001.0003: input: USB HID v0.01 Mouse [QEMU QEMU USB
> Tablet] on usb-:00:01.0-3/input0
> /sbin/init: /lib64/libm.so.6: version `XZ_5.0' not found (required by
> /usr/lib64/libkmod.so.2)
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x7f00
> CPU: 0 PID: 1 Comm: init Not tainted 5.15.78-yocto-standard #1
> Call Trace:
> [c7443ba0] [c09538d0] dump_stack_lvl+0x74/0xa8 (unreliable)
> [c7443be0] [c0103524] panic+0x170/0x3cc
> [c7443c80] [c010cf64] do_exit+0xb44/0xb50
> [c7443d50] [c010d040] do_group_exit+0x60/0xd0
> [c7443d90] [c010d0d4] sys_exit_group+0x24/0x30
> [c7443db0] [c002cfd4] system_call_exception+0x194/0x2f0
> [c7443e10] [c000c2cc] system_call_common+0xec/0x250
> --- interrupt: c00 at 0x7fff9ed9e840
> NIP: 7fff9ed9e840 LR: 7fff9ed7da20 CTR:
> REGS: c7443e80 TRAP: 0c00 Not tainted (5.15.78-yocto-standard)
> MSR: 8280f033 CR: 24022442
> XER:
>
> One or more of the libraries systemd depends on failed to load due to
> unresolved symbols/functions. This was intermittent - with a failure
> rate estimated between 5% and 30%.
>
> After checking the code, this issue happens on gcc 12, kirkstone is using
> gcc 11 works well, with both using the exact same v5.15.84 kernel commit.
>
> There is a kernel fix from upstream [1], they changed the rsize / wsize
> to a multiple of PAGE_SIZE, when we applied this patch, the qemuppc64's
> default r/wsize went from 4096 to 524288.But the qemuppc64 doesn't have
> its own linux-yocto kernel branch, so apply this change might cause
> regression with other platforms which share branch with qemuppc64.
>
> So, we added an extra option for nfs rootfs, and set the qemuppc64 default
> r/w size to 524288 to line up with the kernel fix[1].
>
> Yocto did a similar thing in the distant past[2] - prior to boot-arg
> adjustments existing - by allowing a Kconfig to set the defaults on
> nfsboot, in order to work around hardware limitations.
>
> Reference:
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=940261a195080cf
> [2]
> https://git.yoctoproject.org/linux-yocto-4.1/commit/?h=standard/base=a96cfd98add95
>
> Signed-off-by: Xiangyu Chen
> ---
> meta/conf/machine/qemuppc64.conf | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/meta/conf/machine/qemuppc64.conf
> b/meta/conf/machine/qemuppc64.conf
> index 304f06a30d..7709339313 100644
> --- a/meta/conf/machine/qemuppc64.conf
> +++ b/meta/conf/machine/qemuppc64.conf
> @@ -15,6 +15,7 @@ QB_MACHINE = "-machine pseries"
> QB_CPU = "-cpu POWER9"
> QB_SMP = "-smp 2"
>
> +QB_NFSROOTFS_EXTRA_OPT = "wsize=524288,rsize=524288"
lgtm
> QB_KERNEL_CMDLINE_APPEND = "console=hvc0 nohugevmalloc"
> #QB_OPT_APPEND += "-device qemu-xhci -device usb-tablet -device usb-kbd"
> QB_OPT_APPEND = "-usb -device usb-tablet"
> --
> 2.34.1
>
>
>
>
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#176026):
https://lists.openembedded.org/g/openembedded-core/message/176026
Mute This Topic: https://lists.openembedded.org/mt/96322356/21656
Group Owner: openembedded-core+ow...@lists.openembedded.org
Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub
[arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
